Improved furnace for deoxidizing iron-ore



A. W. HONSINGER. PURNAGE FOR DE'OXIDIZING IRON ORB.

Patented Jan. 4, 1870.

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N, PETERS. Phnmmhu n har. Washington. D. Q

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ABRAM W. HoNsINonn.

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Letters Patent N 98,496, dated Jan-nary 4, 1870.

IMPROVED summon-P011 DEOXIDIZING- IRON-ORE.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern:

letters of reference marked thereon.

Figure 1 is a vertical section of invention through one cylinder.

Figure 2 is a ground plaii of fi 1 at B B.

Figure 3 is a side elevation.

To enable others skilled in the art to make and use .my invention, I will proceed to describe its construction and operation.

Iconstruct my furnace of two upright cylinders, of fire-brick and cast-iron, of from seven to ten feet in height.

Each cylinder (1 consists of an outside shell of firebrick, of about six feet nine inches in diameter, and of about six inches in thickness, strengthened by castiron on outside of the shell.

A second shell, cl, of same height as before-mentioned cylinder, and measuring five feet nine inchesiu diameter, and four and a half inches in thickness, of fire-brick especially prepared for the purpose, stands within the first shell, but separated from it by a space, 0, of about five inches. r

A third shell, 1;, oftire-brick, measuring two feet in diameter, and four and a half inches in thickness, stands within the second shell, and separated from it by a space, 0, of about twelve inches, said space to be varied according to necessity,

In this third shell, there are five perpendicular lines, at equal distances from each other, of escapeholes or passages x, at intervals, above each other, of about ten inches. These holes run in an upward direction, at an angle of about forty-five degrees toward the inner space.

Acap'ot iron, 1 covcrs the space between the upper ends of the second and third cylinders, rendering the space'betweeu them air-tight, and shutting out all communication with the outside air.

At the bottom of each cylinder are two hemispheric doors, s, for dumping the ore.

lonuccted with the cylinders are two puddling-fnrnaccs, A,-made of fire-brick, to be used for puddling ore instead of iron.

From each puddling-furnace, there extends a flue of lire-brick, which, after leaving puddling-fnrnace,- divides into two equal tines, Q, one of which leads into each outside cylinder.

Over the passage-way, there sits a bridge, K, nearly covering the five-inch space between the first and second cylinders.

The object of the bridge is to spread the flame.

There are several tubes or fines of fire-brick, '1',

near the bottom of the cflindcr, passing from the outer surface ol'.thc second cylinder to the inner surface of the third or inmost cylinder. The object of these fines is to convey a portion of the flame and heat to the interioiyot' the inmost cylinder. The number of these tnbes s to be varied so as to have the same amount of heat and flame upon the outside suifilce of the second and the insidc'surliico oi" the third 01' inmost cylinder.

The 'chimncy I) is located on a cast-iron platform, resting on four pillars of cast-iron or mason-work, and begins below the upper edge of the cylinders. Itis bricked up to the cylinders, and-the scam between it and them is air-tight.

In the chimney, We have four doors E, opening on to the platform above mcntioncd, to supply the cylinders with orc.

The advantages of my invention over all other furnaces and retorts arc thes *2 First, it thoroughly deoxidizes the ore, and rcmoves all of the rawncss, and all foreign substances which are in the ore.

Secondly, it accomplishes this deoxidniion and purification of tlie ore at a moderate heat.

The method of opelation is as follows: The space between the second andthird cylinders, is filled with ore mixed with pulverized charcoal.

Heat supplied from the puddling-furnaces passes through the lines marked Q, and fills the space a between the first and second cylinders. A portion of this heat-then passes through the tubes .marked 1',,

into the space j, enclosed by the inner cylinder.

The ascending hcat surrounds the space a filled with ore. It thus dcoxidizcs the orc.

The sulphurous and oth cr gases arising from the heated ore pass off througlnthc small air-holes or passages 2 and after passing through, ignite, and, by combustion, increase the general heat. .Thc' ore is thus purified in cylinders in a new, and thorough, and expeditious n'lanucr, at the same-time that other ore previously dcoxidizcd is being converted into iron in the puddling-furnace, by the same heat.

Cylinders of the bciore-nicntioned size will work at one time three tons of ore.

What I claim as my invention, and desire to secure by Letters Patent, is

l. The combination and arrangement of these concentric vertical cylindcrs, for the dcoxidation and pnrilication of iron-ore.

2. The combination and arrangcmcnt of said cylinders with one or more furnace-fires, construct-ed and arranged substantially as described.

3. The application of said furnace-tires at the bottom instead of at the side of said cylinders, to furnish heat, in the manner and for the purpose alrcad y mentioucd.

ABRAM W. HONSINGER. Witnesses WILLIAM H. FISHER,

Prnnnnroxcn BnR'row. 

